Home / 129,593.43-178,817.25-72,220.19

Finding the Fourth Proportional to 129,593.43, 178,817.25 and 72,220.19

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Solution

The fourth proportional to 129,593.43, 178,817.25 and 72,220.19 is: 99,651.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,593.43 : 178,817.25 = 72,220.19 : x
  2. Step 2: Convert to fraction form
    129,593.43/178,817.25 = 72,220.19/x
  3. Step 3: Cross multiply
    129,593.43x = 178,817.25 × 72,220.19
  4. Step 4: Simplify right side
    129,593.43x = 12,914,214,876.19
  5. Step 5: Solve for x
    x = 12,914,214,876.19/129,593.43
  6. Step 6: Final answer
    x = 99,651.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.